/* 首页样式 */
/* 设置版心效果 */
.wrapper{
    width: 1200px;
    margin: 0 auto;
}
body{
    background-color: #f3f6f7;
}
ul{
    list-style: none;
}
a{
    color: #333;
    text-decoration: none;
}

/* logo区域 */
.logo a{
    display: block;
    width: 200px;
    height: 50px;
    background-image: url(../images/logo2_03副本.png);
    font-size: 0;
}

/* 头部区域 */
.da{
    height: 100px;
    background-color: #fff;
    position: relative;
}
.da .wrapper{
    padding-top: 29px;
    display: flex;
}
.dh{
    margin-left: 80px;
}
.dh ul{
    display: flex;
}
.dh li{
    margin-right: 24px;
}
.dh ul a{
    display: block;
    padding: 6px 8px;
    line-height: 27px;
    font-size: 19px;
}
.da li .sy, /* sy 表示自命名的类选择器，是默认选中的a链接 */
.da li a:hover{
    border-bottom: 2px solid #00a4ff;
}

/* 搜索区域 */
.ss{
    display: flex;
    margin-left: 64px;
    padding-left: 19px;
    padding-right: 12px;
    width: 412px;
    height: 40px;
    background-color: #f3f5f7;
    border-radius: 20px; 
}
.ss input{
    flex: 1;
    border: 0;
    background-color: rgba(0, 0, 0, 0);/* 或者background-color:transparent*/
    outline: none;/* 去掉表单控件的焦点框 */
}
.ss input::placeholder{
    font-size: 14px;
    color: #999;
}
.ss a{
    width: 35px; 
    height: 40px;
    background-image: url(../uploads/fdj.png);
    background-repeat: no-repeat;
    background-size: 100%;
}

/* 用户区域 */
.yh{
    margin-left: 32px;
}
.yh img{
    width: 30px;
    border-radius: 50%;
    vertical-align: middle;
    margin-right: 7px;
}
.yh span{
    font-size: 16px;
    color: #666;
}

/* banner 区域 */
.banner{
    height: 420px;
    background-color: #0092cb;
}
.banner .wrapper{
    display: flex;
    justify-content: space-between;
    height: 420px;
    background-image: url(../uploads/banner.png);
}
/* 侧导航 */
.banner .left{
    padding: 3px 20px;
    width: 191px;
    height: 420px;
    background-color:rgba(0, 0, 0, 0.42) ;
}
.banner .left a{
    color: #fff;
    font-size: 16px;
    display: block;
    height: 46px;
    line-height: 46px;
}
.banner .left span{
    float: right;
}
.banner .left a:hover{
    color: #0092cb;
}
/* 课程表区域 */
.banner .right{
    margin-top: 50px;
    width: 255px;
    height: 300px;
    background-color: #209dd5;
    border-radius: 10px;
}
.banner .right h3{
    margin-left: 14px;
    height: 48px;
    line-height: 48px;
    font-size: 15px;
    color: #fff;
    font-weight: 400;
}
.banner .right h4{
    font-weight: 600;
    line-height: 20px;
}
.banner .right ul{
    padding: 14px;
    height: 257px;
    background-color: #fff;
    border-radius: 10px;
   
}
.banner .right li{
    padding: 8px 0;
    border-bottom: 1px solid #9e9e9e;
}
.banner .right ul p{
    color: rgb(140, 140, 140);
}
.banner .right ul span{
    color: #00d9ffda;
}
.banner .right a{
    display: block;
    height: 38px;
    background-color: #0092cb;
    font-size: 14px;
    text-align: center;
    line-height: 32px;
    border-radius: 18px;
    color: #fff;
    margin: 15px 0;
}

/* 第二个导航栏 */
.dh2{
    display: flex;
    margin-top: 11px;
    padding: 0 20px;
    height: 60px;
    background-color: #fff;
    box-shadow: 0px 1px 2px 0px rgba(211, 211, 211,0.5);
    line-height: 60px;
}
.dh2 h3{
    font-size: 18px;
    color: #00a4ff;
    font-weight: 400;
}
.dh2 ul{
/* 除去标题和修改兴趣的尺寸，父级剩余尺寸都给ul，实现把修改兴趣挤到最右侧 */
    flex: 1;
    display: flex;
}
.dh2 ul li a{
    padding: 0 24px;
    border-right: 1px solid #e0e0e0;
    font-size: 18px;
} 
.dh2 ul li:last-child a{
    /* 取消最后一个a链接的boeder-right */
    border-right: none;
}
.dh2 .xg{
    font-size: 16px;
    color: #00a4af;
}

/* 第二个标题 */
.bt2{
    padding: 25px 0 15px;
}
.bt2 ul{
    display: flex;
    justify-content: space-between;
}
.bt2 p{
    font-size: 18px;
}
.bt2 a{
    color: #adadad;
}

/* 项目框部分 */
.xm ul{
   display: flex;
   flex-wrap: wrap;

}
.xm img{
    width: 225px;
}
.xm li{
    margin-bottom: 14px;
    width: 240px;
    height: 271px;
    background-color: #fff;
    padding: 0 15px;
}
.xm li .text h4{
    padding: 10px 0;
    margin-bottom: 13px;
    height: 40px;
    font-size: 15px;
    line-height: 20px;
    letter-spacing: 2px;
    font-weight: 400;
}
.xm li .text p{
    font-size: 14px;
    line-height: 20px;
    color: #999;
}
.xm li .text p span{
    color: #fa6400;
}
.xm li .text p i {
    font-style: normal;
}

/* 版权区域 */
.bq{
    background-color: #fff;
    margin: 35px 0 1px;
    padding: 70px 0;
}
.bdleft p{
    margin: 24px 14px;
    font-size: 12px;
    line-height: 17px;
    color: #666;
}
.bdleft .xz{
    border: 1px solid #00a4ff;
    padding: 10px 20px;
    text-align: center;
    line-height: 34px;
    font-size: 16px;
    color: #00a4af;
}
.bdright{
    display: flex;
    position: relative;
    bottom: 168px;
    right: -700px;
}
.bdright ul{
    margin-left: 60px;
}
.bdright h4{
    margin-bottom: 12px;
    font-size: 16px;
    line-height: 23px;
}
.bdright a{
    font-size: 14px;
    color: #666;
    line-height: 24px;
}